json数据添加字段

Question

一个json数据中有100条数据，每一条都需要添加node:node字段，采用递归的方式如何添加该字段。数据格式如下
[
{
"_id":"5a2a251752d3ca6a96a26601",
"user":"qqq",
"email":"aaa"
},
{
"_id":"5a2a25b352d3ca6a96a26638",
"user":"www",
"email":"bbb"
},
{
"_id":"5a2a260952d3ca6a96a2665a",
"user":"sss",
"email":"zzz"
}
]

Answer 1

letaddValue=function(json,key,value){for(letiinjson){if(typeofjson==="object"){addValue(json[i],key,value);}}json[key]=value;}addValue(json,'node','node');